Fire extinguisher nozzle



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7. CXA? w|\ A. B. PHISTER FIRE EXTINGUISHER NOZZLE Filed Nov. 28, 1947June 19, 1951 BY ATTORNEYS.

Patented June 19, 1951 FIRE EXTINGUISHER NozzLE Albert Brown Phister,FortThomas, Ky., assignor ito The Phister Mfg. 0., Cincinnati, Ohio, a

corporation of Delaware Application November 28, 1947, Serial No.788,510

My invention relates tore extinguisher nozzles and'particularly to thenozzle adapted to be :retained on the flexible tube through which thefluid is directed toward the source of the fire.

As typical Yof -a -ty-pe `of fire .extinguisher with which Vmy newnozzle is adapted to be used, .reference ishereby made to my Patent No.1,794,982 of March 3, 19371. Inan extinguisher of this type there vvis areceptacle for a supply of liquid Aand a chamber for retaining a chargeof compressed gas. A single actuator voperates both the valve from thecompressed gas chamber to the liquid receptacle, and from the liquidreceptacle to the discharge hose through which the extinguishingfluijdis directed `toward the fire. On the end of the dischargehosethereis a spray nozzle which may be manually controlled to regulatethe volume and subdivision of the liquid into a spray or a substantiallysolid stream according to the particular requirements.

Ordinarily the person using the extinguisher supports it with the lefthand and manipulates the spray nozzle, after opening the control Valveon the extinguisher, with his right hand. It has been found in nozzlesheretofore in use that the facility of operating the nozzle, whichusually has a thumb actuated lever, is often impaired by the hosecausing the nozzle to be presented upside down or crosswise, so thatactuation is extremely awkward and difficult.

It is toward the provision of a nozzle which may be turned withouteffort so that its thumb actuated lever will fall in a convenientposition for easy control that my invention is directed. This not onlygreatly facilitates use of the extinguisher but increases the safetyfactor of the use of the extinguisher precisely at that time when itsproper use will do most toward control of the fire.

The foregoing objects and other objects to which reference will be madein the following description and in the drawings, I accomplish by thatcertain arrangement and combination of parts of which I have shown apreferred modication.

In the drawings:

Figure 1 is a sectional view lengthwise of the nozzle. n

Figure 2 is a sectional view along the lines 2 2 in Figure 1.

Figure 3 is a detail fragmentary View showing a modified type ofcoupling.

In the drawings on the flexible tube I, the tapered corrugated sleeve 2is retained by means of a clamp ring 3. The tapered sleeve has a `1claim. (ci. .a99- 129)l flange 4 which'may be 'circumferentiallyflattened to be received within the jaws of a wrench. A fcollar`15preferably :formed integrally with the sleeve`2 has a cylindrical `endforming a bearing i6 Awhich is internally threaded 'as indicated atl.

A yoke member 8 has a round annular base 9 which 4has .an internal.borewhich permits it to be .fully rotatable on the cylindrical end 6. Athreaded nozzle .plug IIJ has an orice I I extending therethrough.Surrounding the orifice the walls of the plug form a valve seat. 'Theplug has a reduced inner end 'I2 threaded as indicated at 'I3 forengaging 'the internal threads 'I of the cylindrical end 6 of thesleeve.

'The yoke :8 has apo'st AIll secured betweenthe arms .of the yoke and atrunnion 15 which journals the turned down flanges IB of the thumbactuating lever I'I. The lever has a thumb engagement portion I8 and anextension I9 to Which is secured a conical member 20. The apex of thecone forms a valve which engages the seat formed by the wall surroundingthe orifice I I of the plug and thus forms a spray controlling valve.The

' elements 8, 9, Ill, I5, I1, I8, I9, mounted on the trunnion or axleI5, provides the thumb lever actuator assembly and as noted it is freelyrotatable about the axis of the tube.

By pressing down on the portion I8, the apex of the conical member ismoved out of engagement with the seat surrounding the orifice Il. Withthe initial movement the stream first is directed against the wall ofthe cone so as to spread out and form a spray in a wide arc. Furtherdepression of the thumb piece I8 results in clearing the cone 20 fromthe path of the spray which is then projected in the form of a stream.

The particular feature of the construction which facilitates movement ofthe control for the nozzle to a position of convenient control is theyoke construction with its annular external bearing element 9, whichrotates freely on the cylinder bearing 6. The base portion 9 isrestrained from lengthwise movement by its end edges which flt betweenthe collar 5 and the flange 2| of the plug which also is preferablyconveniently circumferentially flattened for engagement by a wrench.

The modification shown in Figure 3 is the same as that shown in Figuresl and 2, excepting that instead of the sleeve having a taperedcorrugated tip, it is provided with a threaded end 22 which engageswithin the threads of a coupling member 23 held in position on the hosewith a ring clamp 24.

To keep the thumb lever with the spray contro1 valve in closed position,a spring member 25 having an end 26 extends along underneath the thumbpiece. The springillustrated makes several turns about the trunnionmember I5 and has its inner end 21 blocked by contact with the postModifications in the specific details of structure will readily occur tothose skilled in the art. While this construction of spray nozzle isparticularly adapted for re extinguishers it will, with slightmodication, serve a useful purpose on garden spray apparatus and thelike.

In the use of the device it has been found that without a deilectorplate, suchas is indicated at 28, the spray at the initial start ofopening the valve will run up on the inside of the lever I1 and coverthe person using the device with spray. Accordingly, the deiiector plateto prevent this has been found desirable.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

A spray nozzle provided with means for attachment to a exible tubethrough which liquid is projected under pressure and comprising a nozzletip assembly having a valve seat member provided with a dischargeorifice extending medially therethrough, said nozzle tip assembly havingan external cylindrical bearing surface, a ,cone shaped valve of suchsize and shape as to act as a deflector when moved from said valve seat,a pivoted thumb lever on which said valve is mounted havingspringtensioned means to urge said valve against the seat, an annulal` basemember having an internal bearing surface adapted just nicely to engagesaid external cylindrical bearing surface for rotation about the axis ofsaid discharge orifice, said base member being fixed against axialmovement with respect to said nozzle tip assembly, and means forpivotally mounting said thumb lever on said annular base, said lastmentioned means comprising a pair of extensions xed to said annular basemember, a trunnion mounted on said extensions, a pair of flanges xed tosaid lever and journaled on said trunnion, a pin mounted between saidextensions, and a torsional spring surrounding said trunnion, one end ofsaid spring engaging said lever and the other end of said springengaging said pin.

ALBERT BROWN PHISTER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 191,964 Holloway June 12, 1877540,818 Oulton June 11, 1895 565,290 Melavin Aug. 4, 1891:` 683,317McBoyle Sept. 24, 1901 832,097 Thomas Oct. 2, 1906 2,054,517 Moll Sept.15, 1936 2,171,501 Gebauer Aug. 29, 1939 2,251,812 Watling Aug. 5, 19412,378,451 Vensel June 19, 1945 FOREIGN PATENTS Number Country Date 1,917Great Britain Jan. 27, 1896 475,286 France Feb. 15, 1915

